может в данном случае стоит до конца цитировать ответ WADA, а то как-то некрасиво получается-
Всемирное антидопинговое агентство объяснило отсутствие достаточных доказательств в докладе Макларена тем, что многие пробы российских спортсменов были утилизированы в московской лаборатории
"А это значит, что они не могут быть перепроверены. Запросы к российским властям от профессора Макларена относительно дополнительных доказательств остались без ответа"

https://www.wada-ama.org/en/media/news/2017-02/wada-meets-with-anti-doping-organizations-ados-to-discuss-mclaren-investigationhttps://www.wada-ama.org/en/media/news/2017-02/wada-meets-with-anti-doping-organizations-ados-to-discuss-mclaren-investigation

WADA’s representatives also reinforced the following points:

The McLaren Investigation was initiated to determine what evidence there might be about the existence of an institutionalized process in Russia to manipulate doping control procedures and reporting; and, to identify any athlete that might have benefited from or been involved in the alleged manipulation to conceal positive doping tests. See Terms of Reference.
The Investigation was never intended to determine whether or not individual athletes identified had committed an ADRV.
The Investigation confirmed that the process operated systemically across a spectrum of sporting disciplines and throughout national and international competitions held in Russia and abroad; and that, a significant number of athletes could have benefited from, or been involved in, the alleged manipulation to conceal positive doping tests.
For many of the athletes identified by the McLaren Investigation, the only evidence available is what Professor McLaren could unveil.
Unfortunately, many samples were disposed of by the Moscow laboratory, which means that they could not be re-analyzed. As well, requests to Russian authorities by Professor McLaren for additional evidence went unanswered.
Together, this means that there simply may not be sufficient evidence required to sanction, with potential ADRVs, some of the individual athletes identified in the Report.